<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>字体练习</title>
</head>
<body>
<font size="7">你好这个世界,</font>
<font size="5" color="red">我很热情,</font>
<font color="blue">还有些犹豫</font>

</body>
</html>